How to use the graphql-subscriptions.withFilter.mockImplementation function in graphql-subscriptions

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github moleculerjs / moleculer-apollo-server / test / unit / service.spec.js View on Github external
it("should create resolver with tags & filter", async () => {
			svc.pubsub.asyncIterator.mockClear();
			broker.call.mockClear();
			withFilter.mockImplementation((fn1, fn2) => [fn1, fn2]);

			const res = svc.createAsyncIteratorResolver("posts.find", ["a", "b"], "posts.filter");

			expect(res).toEqual({
				subscribe: [expect.any(Function), expect.any(Function)],
				resolve: expect.any(Function),
			});

			// Test first function
			expect(res.subscribe[0]()).toBe("iterator-result");

			expect(svc.pubsub.asyncIterator).toBeCalledTimes(1);
			expect(svc.pubsub.asyncIterator).toBeCalledWith(["a", "b"]);

			// Test second function without payload
			expect(await res.subscribe[1]()).toBe(false);

graphql-subscriptions

GraphQL subscriptions for node.js

MIT
Latest version published 2 years ago

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